✔ It sports an electric sound speaker, shutter release active lamp, interval timer, long exposure (it can use interval timer and long exposure simultaneously), self timer, TIME exposure and a release hold mechanism. Take photos without touching your camera and take pictures at regular intervals for time-lapse projects | ✔ Timer functions can be set to 99 hours 59 minutes and 59 seconds in one second increments. Number of shots can be set from 1 to 399; Double dash ( - - ) unlimited. LCD display with backlight and status LED with alarm. A locking two stages shutter button (BULB) | ✔ Compatible with Sony ILCE-a1, a9, a9M2, a7, a7M2, a7M3, a7M3K, a7M4, a7R, a7RM2, a7RM3, a7RM4, a7RM5, a7S, a7SM2, a7SM3, a6600, a6600M, a6100, a6100L, a6100Y, a6400, a6400L, a6400M, a6500, a6500G, a6500M, a6500Z, a6300, a6000, a6000L, a6000Y, a6000Z, a5000, a5100, a5100L, a5100Y, a3000, a3500, QX1 | ✔ Compatible with Sony HX300, HX350, HX400, HX400V, HX50, HX50V, HX60, HX60V, HX99, HX95, HX90, HX90V, HX80, QX30, RX0, RXOM2, RX100M2, RX100M3, RX100M4, RX100M5, RX100M5A, RX100M6, RX100M7, RX10, RX10M2, RX10M3, RX10M4, RX1RM2, WX500, WX700, WX800; A58, A68; NEX3N; ZV-1. Replaces Sony RM-SPR1